| Matt Redfearn | 2aefbef | 2016-10-19 13:05:47 +0100 | [diff] [blame] | 1 | What: /sys/class/remoteproc/.../firmware |
| 2 | Date: October 2016 |
| Paul Burton | fb615d6 | 2017-10-25 17:04:33 -0700 | [diff] [blame^] | 3 | Contact: Matt Redfearn <matt.redfearn@mips.com> |
| Matt Redfearn | 2aefbef | 2016-10-19 13:05:47 +0100 | [diff] [blame] | 4 | Description: Remote processor firmware |
| 5 | |
| 6 | Reports the name of the firmware currently loaded to the |
| 7 | remote processor. |
| 8 | |
| 9 | To change the running firmware, ensure the remote processor is |
| 10 | stopped (using /sys/class/remoteproc/.../state) and write a new filename. |
| 11 | |
| 12 | What: /sys/class/remoteproc/.../state |
| 13 | Date: October 2016 |
| Paul Burton | fb615d6 | 2017-10-25 17:04:33 -0700 | [diff] [blame^] | 14 | Contact: Matt Redfearn <matt.redfearn@mips.com> |
| Matt Redfearn | 2aefbef | 2016-10-19 13:05:47 +0100 | [diff] [blame] | 15 | Description: Remote processor state |
| 16 | |
| 17 | Reports the state of the remote processor, which will be one of: |
| 18 | |
| 19 | "offline" |
| 20 | "suspended" |
| 21 | "running" |
| 22 | "crashed" |
| 23 | "invalid" |
| 24 | |
| 25 | "offline" means the remote processor is powered off. |
| 26 | |
| 27 | "suspended" means that the remote processor is suspended and |
| 28 | must be woken to receive messages. |
| 29 | |
| 30 | "running" is the normal state of an available remote processor |
| 31 | |
| 32 | "crashed" indicates that a problem/crash has been detected on |
| 33 | the remote processor. |
| 34 | |
| 35 | "invalid" is returned if the remote processor is in an |
| 36 | unknown state. |
| 37 | |
| 38 | Writing this file controls the state of the remote processor. |
| 39 | The following states can be written: |
| 40 | |
| 41 | "start" |
| 42 | "stop" |
| 43 | |
| 44 | Writing "start" will attempt to start the processor running the |
| 45 | firmware indicated by, or written to, |
| 46 | /sys/class/remoteproc/.../firmware. The remote processor should |
| 47 | transition to "running" state. |
| 48 | |
| 49 | Writing "stop" will attempt to halt the remote processor and |
| 50 | return it to the "offline" state. |